Nuclear Quadrupole Resonance in the Heavy Fermion Antiferromagnet CePt2In7

Extended Nuclear Quadrupole Resonance Study of the Heavy-Fermion Superconductor PuCoGa5

PuCoGa5 has emerged as a prototypical heavy-fermion superconductor, with its transition temperature (Tc ' 18.5 K) being the highest amongst such materials. Nonetheless, a clear description as to what drives the superconducting pairing is still lacking, rendered complicated by the notoriously intricate nature of plutonium’s 5f valence electrons. Here, we present a detailed Ga nuclear quadrupole ...

Nuclear magnetic resonance in the heavy fermion superconductors

Nuclear magnetic resonance has emerged as a vital technique for investigating strongly correlated electron systems, and is particularly important for studying superconductivity. In this paper the basic features of NMR as a technique for probing the superconducting state are reviewed. Topics include include spin relaxation processes, studies of vortex lattices, and phenomena associated with unco...

Field-induced magnetic transition in the heavy-fermion antiferromagnet Ce7Ni3

We present a detailed study of the field ~B! temperature ~T! phase diagram of the heavy-fermion antiferromagnet Ce7Ni3 that crystallizes in the hexagonal Th7Fe3-type structure with three nonequivalent Ce sites (Ce I , Ce II , and Ce III). This compound undergoes two magnetic transitions at TN151.9 K and TN250.7 K in zero field. Below TN1, an incommensurate spin density wave ~SDW! develops, and ...

Nuclear Quadrupole Resonance*

A resonance phenomenon which is closely related to NMR is nuclear quadrupole resonance (NQR), which was discovered in 1950 by Dehmelt and Kruger. All nuclei with a spin > 1 possess in addition to the magnetic moment, an electric quadrupole moment eQ, which measures the deviation of the distribution of the positive charge in the nucleus from spherical symmetry. While e is the elementary charge, ...

Nuclear Quadrupole Resonance Spectroscopy